Hi and welcome here!
This app and the people in it where a big help in my recovery. I would like to reccoment this thread What's YOUR plan? to read. It contains many information about quiting and the stages of recovery.
First year of mine I checked in every day at the daily check in thread but as a fitness guy maybe this thread is a interesting one to check out: Gym selfies, weightlifting & fitness 🔥 (TW gym attire. Keep rules #6 and #7 in mind). The daily incheck thread you find here: Checking in daily to maintain focus #64 Connection is key in recovery, so take your time to do so here. We are all here for you to help if needed.
Congratulations with your day one to start with! 
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