Hey...that is great that you want to get started showing!! I ordered a few books of of Amazon to start. I couldn't find anyone that wanted to teach me and actually the few people I knew that did show were really rude and unhelpful, as if they didn't want me to LOL.
Since then I have met many of the local handlers here and showing is now an absolute blast whether we win or lose b'c your friends are all their cheering you on and you're there cheering them on. Everyone makes it to the same general radius of shows, and none of us can win (or lose haha) without each other.
Here are a few books I read that helped get me hooked on showing, I would HIGHLY recommend you get at least one of them, if not both, and sit down and read thru them.
I will say...and this is a dangerous statement, and do with it what you will, because its certainly not the attitude I take, but, I would not initially bring your merle into the conformation ring (I can't tell if you want to just do agility w/ him or conformation too). Merles as I am sure you know are just such a stupidly controversial subject and no one wants to be associated with them or people that show/breed them. Many breeders that breed them don't show them. Period. After you've made some friends and people get to know you, do what you want as far as he goes

I just think that part of what has made showing really enjoyable for me is the comradeship and oh boy, cannot imagine what would have happened if I walked in with a merle

Also many breeders won't sell to people that breed them.
Do you have a local kennel club? AKC's website usually has them all listed.
Austin's All Breed Kennel Club: Austin Kennel Club, Inc.
Secretary : Marianne Sue Lair
Address: 127721 Burson Dr., Manchaca, TX , 78652
Website:
Welcome to home of the Austin Kennel Club
Email:
lairkennel@hotmail.com
Club Type: All Breed
Club Detail: Click here
I learned all the showing stuff myself but I now have a mentor working with me to get me ready to breed.
Your little tri color has a cute little head. You should get some stacked pictures of him and compare his body to the breed standard. Tho LOL ... it all just depends on your judge that day and what they like that day haha.