I've just picked up 7 steps to raising a bilingual child. Like $15 at barnes and noble. You can get it here for cheaper
This book really put all my "He's going to be confussseddd" fears at ease. The main thing it stressed was to have a plan. More specifically, a "Bilingual Action Plan." I'm still working on mine but I do have the following ideas.
Doing the calender everyday in spanish only. Today we made a calender in spanish out of paper and poster board and it came out rather ugly. I think I'm going to sew/ embroider one up when I get a moment.
It talked about having a specific time of day that was to spoken in the foreign language. We are going to make mealtimes spanish only.
Watching one 10-15 minute show each day in Spanish.
Completing his Ingenio spanish puzzles during quiet time before bed.
Half of his books will be spanish and the other half english.
Thats more than a good start I think. The book also talked about what level of fluency you want your child to have. Basic conversational, Fluent in conversation, or fluent plus able to read and write. I'm going for the full monty.
We can do this!
I'm learning spanish too because I too want to be fluent. Taking the next level of spanish this summer. Very excited!