Welcome crvc, you've come to the right place for help on this subject. There are some really knowledgeable guys here (myself excluded) who are willing to help the rest of us. I am going through the TRT process myself and have experienced some of the ups and downs and still haven't got it really dialed in yet.
First, you should be going through your doctor in my opinion, even though finding a doctor who will help can be a chore. Screwing around with your hormones is not something we should be doing on our own. There are a lot of things that go on when you start injecting T that you need to keep track of via frequent blood work. Estrogen elevation is the biggest problem you're likely to face. It "chases" the T levels as it is elevated and basically nullifies some of it (for lack of a better description). Anyway, hopefully some of the gurus like KSman and KNB and BBB and others will see your thread and chime in. They were instrumental in hepling me get some help from my doc. If you have a fundamental understanding docs are more likely to communicate with you instead of talk at you.
100/wk is a small dose. Do you know what your total T and free T and e2 were before you started injections? That's another critical piece of the puzzle although ultimately it comes down to how you feel and how your system is responding to the treatments.
Read all the threads on this subject you can so you will know ahead of time what some of the issues are you will encounter. Good luck.