Man, wish I'd read some of these earlier, but I'll toss my limited knowledge into the ring!
1. Try out different editing software packages. I started with VSDC, then moved to HitFilm Express, and then found DaVinci Resolve ... Resolve is AWESOME! Sure, it'll crash occasionally, but I've been using it for months now and it's gotten to the point where my editing is much better and easier.
2. Don't post it all to YouTube. Some of your videos just won't be up to your standards, whether it be the location or the talking. Don't fret.
3. Do some scripting or rehearsals prior to hitting record. Or, record multiple takes. I'll usually do 2-4 takes of a given topic, because my speech gets more refined as the takes go. Sometimes the 1st take is the best, sometimes the 3rd, and sometimes the footage from one take is good but the audio from another is good, and if it's an off-bike shot (like a bike walkaround), you can mix & match in the editor.
4. Practice, practice, practice.
5. Get a GoPro Smart Remote, if you're using a GoPro. I generally know which road I want to record on for a given video, so I'll fire up the GoPro and when I get close, or see something interesting on the way, I'll hit record for that section. Without a power pack, this almost doubles battery life.
6. Carry spare batteries.
7. Think of creative ways to get the shot you're looking for. I wanted to do a "setup your gear" video, and I thought it would be really neat to have one of my videos playing on a cardboard placard I was holding, so I spent about 8 hours in the editor to figure out how to do that - and it turned out fantastic!
8. Do an audio test before leaving. The GoPro Hero 8 will not record audio if it's not 100% seated into the Media Mod. This caught me out a couple of times. Now I do a 3-second audio test, view it, and then hit the road. Saves me time & trouble.
-John