I am by no means an expert on DNA testing, but since I recently went through it, I can share what I've learned about the process. I started by joining the Genographic Project through the National Geographic. They do a 12 marker yDNA test for the worldwide project and give you the option to send your results to FamilyTree DNA to put into their database, which I did. (I found it a bit cheaper this way $115 vs $150 or so.) FamilyTree DNA seems to be the largest and most organized and I found them easy to work with. They offer 12, 25, 37 and 67 marker yDNA tests...the more markers you match with someone the more closely related you are. Of course, it costs more as you go up the ladder. I started with 12 markers...then 25 and then 37. If you can afford 37 right off the bat (about $250) I would do that. The 12 marker gives lots of near matches, so does the 25, but the 37 really narrows down the matches to serious family members and focuses the search down. The problem is with my Y37, I have no matches, but when I do get a match, it's probably a good one. I did not see an Akers project, but you can start one. Very few Akers have done this test. They also have dozens of geographic projects and y search which matches you up against the whole database.
The test is a simple cheek swab, put it in a test tube and send it back.
Keep in mind, the Y chromosone passes from father to son generation after generation...you'll get distant matches with people before there were surnames. You still have to compare notes and use the DNA to confirm the paper trail from your research. You may find nothing...and you may nail it and find everything. Let me know if you have other questions. I found it fascinating...frustrating at times...but really interesting.