For getting started working the "easy" FM voice satellites on 2 meters and 440,
there are several DIY antenna projects on our ANTENNAS page ...
Included are links to ...
(used mine to work the ISS!)
W6NBC’s 2M/70CM Tape Measure Beam Project - .pdf - from January, 2012 QST magazine
Ed Fong’s CLASSIC j-pole construction articles (NOT high-gain antennas by any means ... but EVERY ham working 2 meters and 70cm should enjoy building and using a j-pole!): DBJ1 DBJ2