The first thing we do in the Sprint is to plan. Yes, we still have some forms of planning in Agile.
The Sprint Planning meeting is 8 hours in a one-month Sprint, and shorter proportionately for shorter Sprints.
During this meeting, we pick a number of items from the top of the Product Backlog and put them in the Sprint Backlog. That would be our plan for the Sprint. Items on the top of the Product Backlog are the most important ones; so, it means that we want to focus on delivering the highest possible value in each Sprint.
But, how many items should we pick? It depends on the size of the Product Backlog items. Who should estimate the items? Wait for the next post.