The first of the rules of the House of Representatives concerns the Speaker. It does NOT define how the Speaker is chosen. [This is done, as per the Clerk's statement in the Congressional Record "pursuant to law and precedent - the most important being Art 1 Section of the Constitution. The procedure is described in Chapter 34 Section 3 of "House Practice"]. Instead it deals with key tasks and roles of the Speaker. The Structure of Rule One is
1 Approval of the Journal
2 Preservation of Order - this is described in greater detail in House Practice, Chapter 16 D - Disorder in Debate & E - Critical References to the House, Committees, or Members.
3 Control of Capitol Facilities
4 Signature of Documents
5 Questions of Order - power of the Speaker to rule on, subject to appeal to the House. (A Speaker's ruling can be overruled by the House)
6 The required form of putting a question - "Those in favour say "Aye". Those Opposed, say "No"
7 The Speaker's discretion as to whether to vote
8 Appointment of a "Speaker pro tempore"
9 The responsibility for developing a system for drug testing
10 Designation of members to travel on Congressional business
11 Committee Appointments - "The Speaker shall appoint all select, joint, and conference committees ordered by the House" - and may remove them.
12 Powers to suspend business and to postpone/reconvene the House.
As noted above, a valuable resource to the working of the rules is "House Practice"