‘Strength’ does not have to developed via weightlifting or traditional strength training; Explosive MB Throws, Reactive/Elastic Jumps, and Alactic Sprints are more appropriate for a beginner.
Tempo, calisthenics, abdominal work, and low amplitude medicine ball work develop fitness in a beginner; this is where the seconds at the end of races are shaved off.
Once an appropriate level of fitness is in place (and this is not a algorithm, but rather an organic process that lies in the ability of the coach to observe and make appropriate decisions) then emphasis on speed and special endurance can be done (but the ratio never exceeds 50:50 of alatic:lactic work).