1. Buy a "standard" resident hunting license ($25, Type 101), add to it the APH ($48)
2. Download http://tpwd.texas.gov/publications/pwdpubs/media/pwd_bk_w7000_0112a.pdf
3. From the PDF downloaded in #2 above pick a location to hunt
4. On the map of the desired location check the "Legal Game" box, review the details in this box such as what can be hunted at this location, when it can be hunted, how ("legal means") it can be hunted and the limits for what is being hunted, check other details on the map
5. Get your blaze orange (law, details in the PDF downloaded in #2)!
6. Go to location at the allowed times, dawn you blaze orange, register if necessary (some sites require "OSR" (on-site registration), some don't, this info will be in the details on the map)
7. Hit the field
8. Safety first!
9. Check out when leaving if on-site registration was required
Don't cross from the public land to private land (law), if you kill something take it with you (law). The hardest part for a newcomer is likely knowing what to do with what is killed before leaving. Take a couple pics for memories then "clean" it. To some people that is a big subject in itself. Youtube had plenty of videos. At this point, come back here and post your pics so we can give you virtual high fives! The post *with pics* is important (consider pics law)!
The PDF should have answers to all legal questions. If unclear, ask us. Better yet, call the local game warden (don't know if they are listed in the PDF but they are on the TPWD web site).
Now that you know what to do and you're pumped, ready to bring home the bacon, get a grip on your excitement. Go to a local firing range. Practice, then practice some more.
You traded that 243 for a 338, right? You have scent blocking camo, yes? Your truck has at least a partial camo wrap and a lift kit but has low profile tires? Bone Collector, Browning and Yeti stickers in back window?
Now it's time to hit the field.