i filed my taxes with someone and i just signed up with Turbo Tax, so is it possible to get my tax forms 55511 and 1040 even though i did it with someone else?

[xmasbaby0]

No.   If you prepared and filed a tax return using some other software or some other tax preparation service, and that return was accepted by the IRS, any other attempt to file a return will be rejected.  You cannot file twice.  If you need your tax forms, get them from the service you used to prepare the original return.