Skymines

No — you must use all energy cards in your action area to expand exactly one company and may not divide the energy points between companies; spend the total to enter sectors for that single company (p.12).

Resource cards you used to acquire a display card or advance tracks are flipped after that action (p.11); energy cards are flipped face down after you finish the expansion and resolve rewards/ousting (p.13); a research scientist card is flipped after you move your upload marker and utilize its research points (p.15).

You oust any outposts in the sectors you entered: return each ousted outpost to a vacant home space of its station (lowest vacant in the chosen column; never to a crossed-out space), then top over returned outposts, and remove an outpost from the game only if no valid home space exists (p.13).

No — you must have the required total value of face-up cards in your action area to enter each plan, but those cards are not used up or flipped when checking requirements; special research plans are paid with CrypCoin instead (p.15).

Yes — you may discard a card face up to either immediately perform that card’s action (it acts alone and cannot be combined with other action cards) or pay 2 CrypCoin to take any card from the discard pile back into your hand (p.23).