If you have a friendly LBS go in there and say you want to get a kit for dealing with flats and some instruction on using it (if you go in when it is quiet) - they are likely to be happy to assist you (especially if you are buying the accessories from them).

What you need:

* tool bag (under seat)
* spare tube
* mini pump (that can go in jersey pocket or on the frame)
* Tyre levers (to get access to the tube)

Optional:

* Puncture repair kit (for when you get more than 1 flat)
* CO2 canister/inflator (to get your tyres up to a good PSI level and make sure you don't pinch flat after the change!)
* Multitool (allen keys etc for doing on road fixes)

Additionally, get a track pump with a pressure guage to ensure you are running the correct tyre pressure, and check every 2-3 rides. You want to ensure you are running a good pressure so you don't pinch flat and that you don't make your ride harder than it needs to be! Track pumps make the whole thing really easy.

Anyway, good work and keep it up!

Close to 100M a week is a good start - and in case you haven't heard, cycling is the new golf (guys leaving early in the morning multiple times a week, spending hours away from the family with other guys and spending a small fortune on equipment!)

HTH