Fresh Coffee Beans

If I opened the beans of coffee of starbucks keep, after I am founded the beans I resealed just the beans remaining in the original packing, and left it there for some weeks. Would have-j' to go the purchase some fresher beans?

yes

Themselves they feel good they should be well.

Without any doubts don't purchase more until you exhaust the bag open.
The coffee of Starbucks costs a lot and unless you are millionaire; to use it -- il's well.
If you are really rich and difficult of your coffee and is anxious buying new; then, the donate to a shelter of food or to a church that it will use for their functions or the data to a needy family.
Mettre't launch it far -- the people die hunger in each country.

The next just time to grind your coffee to right before you use it -- the lesson learned.
No worries.