Fellow new knitter here, just finishing my 1st project (the scarf just doesnt count)
Have a look at the video here for Knit stich and practise a few rows - this is called making Garter stich.
When you are feeling happy with that, look at the video for purl stich.
When you do 1 row of knit stich and the next of purl stich (then knit, then purl ...) you are creating Stockinette stich (here in Europe we just call it Stocking stich).
If you want to a second view of how to do the stiches, I can recommend CyberSeams on YouTube - just do a search for 'How to Knit'
Have fun, Irishmam