update readme

README.md

@@ -12,7 +12,7 @@ license: mit
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     <span class="btn-content">Code</span>
 </a>
-<a href="#" class="btn btn-light" role="button" aria-pressed="true">
+<a href="https://colab.research.google.com/drive/1MmO9w1y59Gy6ds0iKlW04olszGko56Vf?usp=sharing" class="btn btn-light" role="button" aria-pressed="true">
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@@ -59,7 +59,7 @@ dataset_n
 
 Each `.tar` file is one sharded dataset. At runtime, wds (WebDataset) api automatically loads, shuffles, and unpacks all shards on demand.
 The nicest part of having a `.tar` file, instead of saving all raw data into matrices (e.g. `.npz` for zarr), is that `.tar` is easy to visualize without the need of any code.
-Simply double clip on any `.tar` file to check its content.
+Simply double click on any `.tar` file to check its content.
 
 Although you will never need to unpack a `.tar` manually (wds does that automatically), it helps to understand the logic and file structure.
 
@@ -77,6 +77,10 @@ For more details on operations of the paper, checkout our GitHub repository and
 
 <img src="https://t3.alanz.info/imgs/data_vis.jpg" width="80%" />
 
+## Getting started
+
+Checkout our [Colab](https://colab.research.google.com/drive/1MmO9w1y59Gy6ds0iKlW04olszGko56Vf?usp=sharing) for a step-by-step tutorial!
+
 ## Citation
 
 MIT License.