I also found the sleep books overwhelming ( and I only read one). My ped told me my baby couldn't self soothe before 6 mos, so I kept that in mind. It is easy to think that you might be setting up bad habits, but please give yourself a break...just the fact that you are thinking about sleep now is good and you will do fine. It's okay to ponder stuff, but you have some time to sort it all out.
I started a sleep routine for naps and bed at 3 mos, just to build an association with relaxing and that routine. Even before that I introduced soothing music and a stuffed animal (that could attach to crib rail--Gentle Giraffe by cloud B-it's wonderful) at sleep time.
At 6 weeks, I would rock my baby to sleep for naps, and put him down drowsy for bedtime. What I regret is that I felt that at one year it was harder to find a sitter for him that was willing to rock him to sleep and then put him in his crib for naps (he is a big boy). I always thought I would stop rocking him when he went down to one nap. Instead I stopped at 15 mos, which was 3.5 mos before he went to one nap.
I also found CIO was okay for me because I had noticed that the sometimes needed to let off steam before sleeping. (like 2 mins of crying). I got to know why he was crying, that made it easier to accept CIO, because it seemed more like boundary setting. What made the difference was that I had time to get to know my child's personality and needs, so I was able to accept some CIO in order to let him know that bedtime was bedtime.
I did use some props, (binky, rocking) and I had a plan for how I would eliminate them as my son got older. It all worked out.
I hear your concern and it reminds me of how stressed I got about healthy sleep for my baby. Well, in time we sorted it out and I believe you will too.