Should i go with Direct plan Mutual fund being first time investor?

Hello Sir,

I am new to Mutual fund and equity investment .I have not invested anywhere yet.I am thinking to invest in following small-midcap fund for long term(10yrs) via SIP(Rs. 500).

1) HDFC MidCap Opp.- Direct (G)

2)SBI Magnum Midcap Fund (G)

I am thinking on that looking their last 5 yrs performance (regular mode).

My Questions:

1) Should i go with Direct mode of above funds as i have very basic ideas of MF?

2) Please give some suggestions on above selected funds.

3) can i fill form online and get folio number online instead visiting their location ?

4) Is there any other difference between Direct and regular except reduced expense ratio?

Any additional advice from your experience will be always accepted

Thanks,

Ritesh