elf

hi guys I'm amateur Linux user. now i can connect to internet with WiFi but i don't know how connect to internet via LAN (Ethernet) my problem is Ethernet setup . please help me for make small network with 2 or 3 client With the ability to share internet and file. my boards : 1 orange pi PC plus( Intended for server ) , 2 orange pi Zero 512Mb ( Intended for client ), network Components : LinkIt Smart 7688 (WiFi to Ethernet Bridge ) D link 8 port switch I'm so sorry for bad English