diff --git a/README.md b/README.md
index ec88d2b..16d0257 100644
--- a/README.md
+++ b/README.md
@@ -3,5 +3,22 @@
 This repository ports the C++ decoder code from [Kaldi][Kaldi]
 using [OpenFst][OpenFst] without depending on [Kaldi][Kaldi].
 
+# Usage
+
+Please first install it using
+
+```bash
+pip install kaldi-decoder
+```
+
+and see the following examples about CTC decoding:
+
+|Description| URL|
+|---|---|
+|Decoding with H|https://github.com/k2-fsa/icefall/blob/master/egs/librispeech/ASR/conformer_ctc/jit_pretrained_decode_with_H.py|
+|Decoding with HL|https://github.com/k2-fsa/icefall/blob/master/egs/librispeech/ASR/conformer_ctc/jit_pretrained_decode_with_HL.py|
+|Decoding with HLG|https://github.com/k2-fsa/icefall/blob/master/egs/librispeech/ASR/conformer_ctc/jit_pretrained_decode_with_HLG.py|
+
 [Kaldi]: https://github.com/kaldi-asr/kaldi
 [OpenFst]: https://www.openfst.org/
+