Some quick tips for begginers. They only maybe will get you killed.
First of all, your first move is a blue move and your second an orange one. There is no reason to dash (other than baiting enemy overwatch), so there is no reason to not do a blue move, tab to the next soldier, do his blue move and so on.
How do I move:
If on concealement
your blue move is the furthest you can go, ignore cover. If on a timer and no enemy spotted, move again, this time to cover, to protect you from patrols. If enemy spotted, then go and plan your ambush!
If not on a timer, overwatch. No reason not to.
If not on concealement with a phantom ranger.
Move the ranger like said above. If he spot an enemy, try to bring your closest soldier to one tile away from enemy line of sight. Use the crosshair indicator for help.
If you done this move and not activated the pod, good. Position the rest of your squad exactly one tile behind that first soldier, just to assure you won't activate anything. Overwatch all.
If a sharpshooter with squad overwatch is present, don't move him. Just overwatch.
Bask on your victory.
If you did not activated the pod, either because they moved away or stood still and you are on the clock, do not overwatch, instead move your first soldier to cover where you know you will activate the pod and have a fair fight for once.
If you don't have a phantom ranger, stick to blue moves only, ignoring cover until you find an enemy, placing everyone in a line behind the first soldier to move is the safest imo.
If everyone made their blue move without attracting Aliens, you are safe for the turn. No need for cover, só focus on distance to deal with timers. A concealed ranger allows you to move even further. That's how you cover great distances while safe.
That's it for now.
I know, I am great, please be excited.