It’s been a while since I used Kicad, but I just loaded up version 9 and things feel “missing”.
Adding a wire to a bus: hotkey Z works as I remember. However, the entry it makes goes down and to the right. To go Left, I expect the / key to change direction - but it doesn’t.
And my search of Help docs fails to say Why, or How to do this in the latest version.
Running a DRC: This was a common step. I seem to recall a menu selection, or even an icon for it. Maybe I’m too old, but I can’t find it any more.
Again, the Help system lets me down. While DRC is mentioned 8 times (word check), How to Invoke it remains a mystery.
There’s no denying Kicad is much more powerful, and complex, than when I first used it. I just feel like some of the basics are being overlooked, both in operation and the help docs.
What was your previous version? At one point the whole icon set was changed. Maybe you just don’t recognise it. The schematic editor and the pcb editor have identical toolbar icon for ERC and DRC, respectively.
It ma be worth your time to read through all the menus and check all tooltips of the icons.
According to Discourse, OP last posted 6 years ago. In 2019, 5.1 was current, and looking at the eeschema document, the ERC and DRC icon is an insect. I vaguely remember that icon. No wonder OP didn’t recognise the new icon.
With such a large version difference, OP really should treat it like a new program and start with the Getting Started document.
It really is a big leap. The whole schematic editing paradigm was changed, all the icons have been redesigned, quite many menu items have been moved, long press and right click on an icon may reveal options. And these are only the UI changes for old functions, we aren’t even talking about new features.
I miss the old icon. I used to say: “Let’s see, what the bug has to say about my design…” or “The bug is complaining too much, there is something wrong…”
Man, it’s just an icon. Something that is distinuishable from all the other icons. Or do you say “I don’t click there, I don’t like the looks of it”.
If you switch versions, just have a look at what might be new. Just like with a new car you are getting familiar with. “I didn’t find the steering wheel, it has a different color. So I had to ask the car’s manufacturer”.
You are not the only one. In fact, when we updated the icons, there was a hue and cry about the missing insect. So I re-drew it (we did not have permissions to the original icon) and we made it the Report A Bug icon. For kicks, here is the original icon:
And, BTW, the icon images are separate files which can be replaced! You can create your own icon theme. If I remember correctly, that (separating icons as a resource from the binaries) was a change made at least partly because of that notorious theme discussion.
And I was one of those voices “Why did they ruin the Iccons” I yelled, to no avail. Especially the ladybird bug, you will be hard pressed to find a better Icon than what we had, it’s universal for goodness sake anyone in any country speaking any language could find that button immediately. I still have to ‘look’ for it. I want it back in the next release, hell no I Demand it back in all its glory. If Kicad is guilty of taking a step back (It aint) but whoever changed it well I would point at them. So please post the original file and I will replace it immediately
Yeah, to call it a bug I would have to talk to myself. I would then lose many arguments. But not having to name something in my mind saves effort because I don’t need a extra layer between concept and action. It’s the icon that runs ERC or DRC, whatever it looks like.
That’s why I had to be reminded that it used to be an insect icon. At some point I noted the spots and that it was a ladybird but that got forgotten too. But of course if you are verbally communicating with others then you need a point of reference, so it was “the bug” and now it’s “the checklist”
Calling it DRC is actually a trap. I opened one of the Help files, did a search for DRC, and found - precious little.
The solution? Search for “Design Rule Check”.
My suggestion to whoever is in charge of that file: add (DRC) at the end of that heading.
To ensure it turns up in a search, AND you should always define acronyms.
Oh, and my other original issue? Z for adding wire to bus? Hitting R to Rotate does the trick.
You are not the only one. In fact, when we updated the icons, there was a hue and cry about the missing insect. So I re-drew it (we did not have permissions to the original icon) and we made it the 
“Why did they ruin the Iccons” I yelled, to no avail. Especially the ladybird bug, you will be hard pressed to find a better Icon than what we had, it’s universal for goodness sake 
anyone in any country speaking any language could find that button immediately. I still have to ‘look’ for it. I want it back in the next release, hell no I Demand it back in all its glory. If Kicad is guilty of taking a step back (It aint) but whoever changed it well I would point at them. So please post the original file and I will replace it immediately 
But not having to name something in my mind saves effort because I don’t need a extra layer between concept and action. It’s the icon that runs ERC or DRC, whatever it looks like.