Side missions are those which are not to do with the main story of Red Dead Redemption. They are usually found randomly across the game but some are marked with a grey or purple question mark during progress through the game.
You can do missions for Bonnie MacFarlane in Red Dead Redemption, that is all.
there are a few number of side missions in red dead redemption located all over the map. They may appear on your map or you may stumble across a hidden side mission
no, you can replay them in the mission section of the pause menu
you have to finish all of the undead unter missions before you can find him.
you must complete more story mode missions
There are stranger missions hidden all over the place. There are some stranger missions which are unhidden which you can find by looking for a question mark on your map but some you just have to find by wondering the landscape
57 Missions But There Is Stranger Mission Too But All I Know Is That There Are 57 Main Missions And I Dont Know How Many Stranger Missions There Are
You just do random and mini missions found throughout the map
That depends on what you mean. If you mean as far as the plot of the game goes, it ends when you complete the Stranger side-mission "Remember My Family". Or, you complete the game after you complete all missions, challenges, etc.
red dead redemption
you need at least 18/19 stranger missions complete outfits need to be completed hideouts and challenges Save
Beat all story missions, complete all challenges, unlock all outfits, and have all the guns. Basically you got to have everything you can think of done.