Cutting the deck

I have read many different ways to cut the deck.
The only one I follow is to cut with your left hand. I deal with my right hand, so I feel cutting with the left gives the deal some balance.
I also cut into three piles. The most common admonition is to cut with the left hand into three piles to the left.
It works for me, but I don't doubt some other method would work as well, this is just the way I learned.

Large cards such as Thoth, Rohrig and Voyager present problems to those with smaller hands.
You can try shuffling them from the sides, vice the long way. You can also try swishing them around on a table (make sure it is clean), or on your bed. Like poker cards, Tarot cards wear with time.
I still have my first Motherpeace deck and while it is a little "thick", I have not been able to bring myself to part with it. If you read for others though, you probably will not make a good impression with a deck so worn and fat that it is difficult to shuffle. My old friend is reserved for my personal use only.

Another question that comes up is whether to deal the cards face up or face down. I deal face up, because I like to get a feel for the spread as a whole, but some people find it distracting. They feel that they start forming impressions before they have the whole spread dealt. Dealing face down avoids this.

I think that we sometimes get too tied up in the ritual and "doing things right" and forget that Tarot should be a relaxing, enlightening experience, vice a nervous ordeal because we are trying to shuffle in a way we are not familiar with, trying to remember the right way to cut, the proper invocation etc. Relax, get the cards well mixed and read.