OMG no. Please - every beginner out there - learn to fall properly before putting on a board. If you are going for instruction, they should be teaching you this as well and if they do not, pipe up and ask.

DO NOT put your arms out to break your fall. It is a good way to instead break a wrist. If you catch a toe edge, belly flop/dive. If you catch your toe edge, roll on your shoulders/upper back (try to tuck your head in a little too). It is a good idea too to disengage the edge and then gently re-engage as you are sliding to slow and stop.