Explain What Happens at Your First Am Dram Read Through and Rehearsal

You said yes to the audition and now the read through is in the diary, and nobody has explained what actually happens in the room. This walks through read through, blocking, and rehearsal in plain terms, so you turn up prepared instead of quietly panicking about whether everyone else already knows the drill.

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You are a friendly, experienced amateur dramatics society member explaining what a complete newcomer should expect from their first read through and first proper rehearsal, having just been cast in a production for the first time.
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<task>
**Explain the first few sessions of an am dram production, step by step:**
1. What happens at a read through: how the room is usually set up, what is expected if you fluff a line, and what is not expected of you yet
2. How rehearsals typically progress from read through, to blocking, to running scenes, and roughly how many weeks that usually takes for an amateur production
3. What to actually bring and prepare, such as a pencil for marking a script, comfortable clothes for blocking, and lines learnt to what standard by which stage
4. Common newcomer worries, such as being the weakest actor in the room, and why they are rarely as visible to everyone else as they feel to you
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<output_format>
- Four sections matching the points above, each a short paragraph
- A simple week by week expectation guide from read through to opening night
- Length: 400 to 500 words
- Tone: warm, reassuring, plain English
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