1/ Some notes from Shoichi Yamanami’s English etymology book: http://amzn.to/1RNGTGw
2/ kap (= grab stuff) is the origin of keep and have (kap≈hap). Has latin form cap (capture). Also cap ≈ cip (anticipate) and cup (occupy).
3/ Also, cap ≈ ceive, cept, ceit (receive, accept, receipt). Ex+cap=escape. Capital=captured livestock. cap also means “head” (captain).
4/ Origin of “get” → ghend, which came from hand, so get = “grab w/ hand.” Also: ghend became prehendo, origin of apprehend (arrest).
5/ Latin deg (touch and pick something up) became tag (contagious, integral), tak (take), tach (contact, touch).
6/ Pay attention to edit distance in pronunciation. ped means “foot”. p/f and d/t are similar sounds, so ped → fet → feet → foot (e ↔ o).
7/ ped (= foot): pedestrian, impede (obstruct). More consonant/vowel changes: ped ≈ pod: tripod, podium. ped ≈ pet ≈ pat ≈ pas: pass, pace.
8/ More inflections (changing the end of a word): t becomes ch, such as capture → catch, port → porch (entrance), feet → fetch.