In using an SSD as a boot/OS drive the general consensus is that it's better to do a clean reinstall onto the SSD (as opposed to an HDD to HDD where you could clone an image of the original OS). Remember to disconnect all HDDs before you install the SSD (safety measure only) then reconnect after the OS boot has been confirmed.
This does, unfortunately, mean that you will need to manually reinstall all your non-OS software, and note down all relevant ID/passwords that might be required (e.g. Outlook, messenger, etc).
It is a bit of a one-off pain. Scan your Start menu programs for software you want to reinstall and record on a piece of paper. For any non-start menu installations you will need to scan the HDD. Of course, you need the original CD/DVD/USB/etc that the software came on. Alternatively, if it's (the .iso/etc) on your current HDD you need to copy this onto external media.
Remember to copy any My Documents/Pictures/etc folder contents you want to keep.
Game saved positions can also be transferred but these require a bit more detective work on the exact source location - Google helps here.
Since you will still have your old HDD you could always reconnect this (disconnect all others) if there is something you've forgotten. Additionally, tools such as Acronis Disk Director/Paragon Partition Manager can help but you need to be very familiar with these types of utilities.
These are some things to get you started.