I've said it before, I'll say it again... I recommend all newbies begin their hairloss treatment with minoxidil (sold as rogaine/regaine or preferably generic). It's the fastest acting treatment (give it 4 months) and you're not F-ing with your hormones as you are with finasteride (propecia/proscar). If minoxidil isn't giving you the desired results after 4-6 months consider finasteride.
If you're outside the US, you may have trouble getting 5% minoxidil, in this case use 2%, it should give you around 60% the results that 5% minoxidil would, assuming you're a responder. If it's too much of a pain in tha *** to apply minoxidil twice a day, try to use 5% once daily before bed.
Just about every chain of drugstores/grocery stores sells a generic minoxidil solution, best to use money-wise and just as effective as name brand rogaine. You can also buy it several places online. I just ordered a 4 month supply of Kirkland 5% minoxidil from a guy on ebay for $33 incl. shipping.
Lotsa guys also like theraputic/medicated shampoos like nizoral, neutrogena t-gel or dandruff shampoos with zinc, these won't grow hair but it's important to maintain good scalp condition.
Hope this helps,
NT