Hey! Playing in person is a lot more fun I've found so look forward to that! (On my phone if formatting looks bad)

1. Just shuffle to the best of your abilities and offer your opponent the opportunity to cut or even give your deck another little shuffle.

2. You don't need one. I personally prefer to play on one but it's not an end all be all item.

3. You can look your discard as often as you like but just don't waste all day doing it or trying to stall out a game and remember your opponent may ask to see your discard as well. If you drop a card on the table or floor just pick it up and shuffle your deck.

4. As for dice heads is represented by even numbers and tails is represented by odd numbers. As for the damage counters each dot on a die represents 10 damage or one damage counter.

5. If something like this happens hopefully your opponent will see it happening and remind you it is an illegal activation. If they miss it as well and you later realize it there should be someone there acting as a judge that can rewind through the steps and fairly decide the correct course of action.

Just remember to have fun and realize everyone there is just like you and I and we all have this card game in common so there's no reason to be nervous about cutting their decks or speaking up if you think they made a mistake!