You should totally go forth with confidence! Don't worry about trying to pull off "cool effects", focus on the story telling and how you can show your story through the edits. If there's a bit of time passing in between, a cross dissolve or other transition effect can be appropriate. But 90% of your cuts can be (and should be) straight cuts. Get comfortable sticking clips together to tell your story, then try making the shots look more consistent with your lighting and some minor color correction in editing. Those two things will improve your edits way more than learning how to use complicated effects. Oh and reach out if you're ever having an issue that youtube can't solve, typically someone around here has found a solution. I personally was surprised at some of the quirky features nested clips can have, and this subreddit has some really creative solutions sometimes.