Hi,
TSM admin guide for AIX has steps for successfull installation - so read it.
There is a "magic" command in AIX - called "smitty" (or "smit" for GUI version) - it can help you with configuration and administration of everything (almost) you need - SW instalation, device configuration etc.
Start with TSM for Linux - it can help you with understanding the differences between Windows and *nix worlds (using dsm.sys+dsm.opt vs dsm.opt, no "-k" switch for TSM server instances - use variables .... etc.)
Harry