Hello tangshaobo8,
I am glad that you liked the videos of EA Studio.
1. Like I said in the previous post the higher time frames are available in FSB Pro. Here are free videos about it:
Forex Strategy Builder Professional
2. The EAs in EA Studio work with the MetaTrader indicators and you can not apply price action trading.
3. You can combine price action with EA. For example, you can use trend lines and Fibs to decide if you want to buy or sell.
After that, you can use the EA to give you the right moment to buy or sell.
You can set the EA only to buy or only to sell. When you drag it over the chart, click on Common, and they select the direction:
4. Tell me which courses you have taken so I can suggest you the next ones.
Cheers,