Originally Posted by
Colin Southern
You're welcome.
There are many programs out there, but not all are "created equal". The gold standard for capability is Photoshop ("PS") (which is what I - and many others here - use). If you're interested, Adobe have recently changed the way they sell it from a "pay once - perpetual licence" (costing many hundreds of dollars + updates if required) to a monthly / yearly subscription model (like most anti-virus software) where you can have their very latest creations - constantly updated - for a monthly fee.
We have a post-processing forum, but it isn't oriented around any particular package.
I should add that some packages are free and very capable, but Photoshop has by far the most inertia (help materials available, user support etc).