https://www.youtube.com/watch?v=Sg6EApFRhpY This is a great video for learning more about the different types of composts and mulches, and the factors that determine their quality. For this year's gardening efforts, I used a mix of mushroom compost, my own compost and vermicompost... my results so far are much better than last year, and I think adding a blend of materials helped.
Yes. I didn't drill holes in mine for a while because I just left the lid off, resembling my larger sized cubic yard compost bins. However, using a lid with plenty of holes can offer the same benefits- good airflow and it allows rainwater to penetrate, too. Now that it's summer, compost systems need more moisture to work effectively... keep them damp, and if you want to use a lid, drill holes to contain the process without hampering it.
One of the best things I ever did to improve my vermicomposting process was putting my weekly food scraps in the freezer for a few hours before adding them to my Worm Inn later. It'll keep the bugs down and it'll help decompose the scraps a bit more through the freeze/thaw activity. If you're having bug issues in the summer, I recommend checking out my video How to Make a Fruit Fly Trap For Under Two Dollars . How are your worms doing? Maybe it's time for a video.