There are three types of executive actions and each has different authority and effects.
1). An executive order is assigned a number and published in the federal register–similar to laws passed by Congress. Usually executive orders are a new policy or directive for the executive branch.
2). A presidential memorandum does not have to be published or numbered (but that doesn’t mean they can’t be). Typically memoranda are used to delegate tasks Congress has assigned the president to other members of the executive branch.
3). Proclamations are mostly ceremonial observances of federal holidays and awareness months. There are some exceptions to the rule like Lincoln’s Emancipation Proclamation.
Here’s an interactive calendar of executive actions Trump has taken so far:
Jan 20: Presidential Proclamation- National Day of Patriotic Devotion
Jan 20: Presidential Memorandum- Reince’s regulatory freeze
Jan 20: Executive Order- Declaring Trump’s intention to repeal the Affordable Care Act
Jan 23: Presidential Memorandum- Out of the TPP
Jan 23: Presidential Memorandum- Hiring Freeze
Jan 23: Presidential Memorandum- Reinstating the ‘Mexico City policy‘
Jan 24: Presidential Memorandum- Reduce regulations for US manufacturing
Jan 24: 3 Presidential Memoranda- Approving pipelines
Jan 24: Executive Order- Expediting environmental review for infrastructure projects
Jan 25: Executive Order- Cutting funding for sanctuary cities
Jan 26: Executive Order- The Wall
Jan 26: Presidential Proclamation- National School Choice Week
Jan 27: Presidential Memorandum- ‘Rebuilding‘ the military
Jan 27: Executive Order- Immigration Ban
Jan 28: Presidential Memorandum- Defeating ISIS
Jan 28: Presidential Memorandum- Reorganizing the National and Homeland Security Councils
Jan 28: Executive Order- Drain the swamp
Jan 30: Executive Order- For every new regulation posed, repeal two existing ones
Feb 2: Presidential proclamation- American Heart Month
Feb 3: Presidential Memorandum- Reviewing the fiduciary duty rule
Feb 3: Executive Order- Reviewing Wall Street regulations
Feb 9: Executive Order- Protecting law enforcement
Feb 9: Executive Order- Reducing crime
Feb 9: Executive Order- Combating criminal organizations