Trend Trading Basics

Hi Everyone,



I am after some confirmation from the experienced out there in relation to trend trading;



I understand I am looking for the following going long and the opposite when going short



At least 2 x higher highs and high lows from the closing price or vice versa for shorting. Does price need to have broken through resistance levels and vice versa support when shorting?



Also what bearing does volume have in both scenarios?



Also how does one ascertain what time frames to chart as in hourly, daily or weekly? I assume this differs on the product being traded, asx200, index futures, commodities?



Thanks