I don't pay much attention to the House Edge so I can't say if it's good or bad based on that but I prefer to play real table poker with real players and this game is sort of like playing slots poker and it's not too exciting but the site according to me is one of the best in sports betting and if you bet on that you'll find it's way better then some of the other sites.
I'm not really a fan of poker. Never really had profit from it. Tho what I like in this site is the live betting.
I agree with what you said and I actually quitted playing in them.
If you know the basics then just start playing some freerolls to get the hang of it and then start playing some small tables and just go real slow, play with good hands at first and try little bluffs every now and then and see how it goes, it's a game of patience and it takes time. Talking about Texas Hold'em btw not all in poker.