Welcome to LD4all! So, regarding your first question, I’d suggest to have a look at this guide: How to choose your technique. If you don’t feel comfortable with WILD, then don’t do WILD. There are a lot of different techniques with different variations to choose from. But if you want to stick to WILD, keep the difference between “aware” and “awake” in mind. WILD is NOT about staying awake, but about staying aware. Check out this article, it might clear up some stuff about WILD (the swallowing thing is also mentioned). Do you know that you can use those random scenes to actually get into your dream while doing WILD? Treat them as HH and you will eventually get there.
About your second question, I admit that I don’t know much about “how to get a WILD” even though I had a few myself. So you might want to wait for other people to answer this question or to scan the forum for similar topics. 