TIPS on relationships (pls help me)

Ok so, I just generally need a lot of tips of relationships because so far the past few relationships i been in have been horrid. My first one was really unhealthy. And my second one was just not good. 

So like any tips on staying away from unhealthy relationships and being in good healthy ones AND I NEED TIPS ON ACTUALLY ASKING SOMEONE OUT. so yesh please just give me tips pretty please.