...Back then they said you wanted to minimize the amount of writes to a SSD. Whether that stands true today I'm not sure given how far SSDs have come and their endurance, etc. But what you should do, and if this is if you have a second mechanical HDD in the computer, is move things like your downloads, Music, Pictures, etc to the second disk. Especially downloads. You can do it in two ways. One is I think by use of a symlink. But what I do is just create a folder on my second HDD called Downloads, and then in my browser set that path for my new downloads folder. You just have to remember your downloads will go to the second HDD. This will help keep the writes at a minimum on the SSD.
My laptop is only capable of one HDD, and it's an SSD. So of course I can't send my downloads to another drive. So in that case you have no choice in the matter...
Write life is not the issue now that it was when SSDs first came out. About the only thing you need to do to reduce unnecessary writes is to disable Hibernation unless you actully need it, such as for a UPS to "save" your data in an outage (I had Hibernation enabled on my first SSD and, when it died for other reasons almost five years in, I still had enough write life left for another decade).
The advice to move data folders from an SSD to a separate HDD is more to better utilize limited space on a smaller SSD than to reduce writes to it. Due to the higher costs of SSDs, a popular option is to use a smaller SSD for a boot drive with only the OS and programs on it and to store data on a separate, larger, less expensive HDD for data only. This also makes a better quality SSD more affordable.
Another reason for separating data files from System (OS and data) files is to better utillize the best methods for backups. The System is best backed up by using imaging (not cloning: cloning is best used for migrating the contents of a drive to another drive). Images can be used to similar System Restore only far more reliably. Also, unlike clones, multiple images can be stored on a drive. I recommend Macrium Reflect Free for imaging (and cloning, for situations when cloning is warranted).
Unlike the System, data is best backed up using a folder/file syncing program, such as FreeFileSync. Syncing will dramatically speed up backups of data and reduce the amount of space needed for backups.
Of course, if you have room for only one drive in a computer, it will be necessary to keep both System and data files on the SSD. As long as there is sufficient room on the drive (there should be at least 20-25% free space at all times), doing so will not reduce write life. The advantage to separating the System files and data files still applies to backups.
My notebook computer has a 2TB SSD in it with four partitions: System Reserved, C:/ (OS and programs), E:/ (data only; obviously, the largest partition), and the factory recovery partition. For backups, I image all but the data partitions together in one image. I use folder/file syncing to backup the data partition.
About one really needs to check on an SSD is, once it has been formatted, is if TRIM is enabled and if the SSD clusters (not partitions) are properly aligned. AS SSD Benchmark, a freebie, will tell you if the clusters are properly aligned or not. If you get two "Good" in the upper right corner, you are fine (99 44/100% of the time, you will be fine). Someone already has mentioned how to check to see if TRIM is enabled.
The only other things one really needs to do to ensure best SSD life and performance is to not defragment unless total fragmentation exceeds 25% (not likely to ever happen) and to make sure one maintains at least 20-25% free space.
