Welcome. I am sure you will find a lot of usefull info on AIM here, on the other site, and Tom's website.
People have tries but I believe AIM will not work with FOREX.
The one risk of AIMing is that something you buy goes to zero. Therefore any kind of fund works very well with AIM because it avoids that risk (ETFs CEF closed end funds, and no load mutual funds)
There are a few currency ETFs which can be AIMed
fxa, fxb, fxc, fxe, fxf, fxm, fxs
You would buy them and put 50 to 70% of what you want to invest in them and the rest in cash in case it goes down.
I don't know you but the place to start is with a diversified portfolio of stock related funds. large, small, foreign, REITS, bond