Namaste.
There have been so many translations and purports given to the original Vedas and Upanishads, that unless one can read and understand Sanskrit, it is ALL pretty much up for interpretation - it is why I leaned Sanskrit.
However, when I get lazy, what I like to do is to compare translations of the same Upanishad (or Veda) by different scholars.
Max Mueller has been criticised by academics, but his translations are perhaps the easiest to understand for a lay person.
https://m.youtube.com/playlist?list=...elNG0HgkA0057I
Then, Swami Krishnananda from the Divine Life Society wrote some rather good translations on the Upanishads...
However, in the digital age, enter the glorious beauty of Android Apps...
https://www.google.com/search?q=upan...obile&ie=UTF-8
*just click on the down arrow to see them all*
The same can be done for the Vedas:
https://www.google.com/search?q=veda...obile&ie=UTF-8
This will give you a good starting point to proceed at your own pace and not get overwhelmed with large words or convoluted concepts.
....and yes, the Vedas and Upanishads are all surprisingly SHORT!
120 Smartphone pages is about right.
There are many different translations...many different authors...some will have their favourites, some will be biased and will say either this translation or that one is "definitive" thus confusing people even further..
Just graze amongst it.
Aum Namah Shivaya