Newbe

[ArmySGT.]

Definitely "Liberation at Riverton" ....... very good for introductory module.... some hit charts, some new equipment.

It is a good starter.
Probably "Operation Lucifer" next...... there is a lot of territory covered in that one that is really good for setting and lots of side adventures.

Every module gives you some new piece of equipment, a few new charts, etc.

Purchase "Rogue 417" from Tri Tac Games, this was intended as an alternate timeline or supplement to TMP. All the tables for random events and settings make that worth it.